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How do I do redo (i.e. “undo undo”) in Vim?
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@amindfv: take the number from :undolist and type :undo 178 (say) to rewind to step 178.
– Peter
Dec 5 '12 at 22:41
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Accurate way to measure execution times of php scripts
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You can use the microtime function for this. From the documentation:
microtime — Return current Unix timestamp with microseconds
If get_as_float is set to TRUE, then microtime() returns a float, which represents the current time in seconds since the Uni...
Error Code: 2013. Lost connection to MySQL server during query
...enced thread is about the MySQL error 2006, setting the max_allowed_packet from 1M to 16M did fix the 2013 error that showed up for me when running a long query.
For WAMP users: you'll find the flag in the [wampmysqld] section.
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Detecting if an NSString contains…?
... "length" of NSRange should be tested...not "location".Here it is directly from source: "These methods return length==0 if the target string is not found. So, to check for containment: ([str rangeOfString:@"target"].length > 0). Note that the length of the range returned by these methods might b...
Update a submodule to the latest commit
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Enter the submodule directory:
cd projB/projA
Pull the repo from you project A (will not update the git status of your parent, project B):
git pull origin master
Go back to the root directory & check update:
cd ..
git status
If the submodule updated before, it will show so...
The program can't start because libgcc_s_dw2-1.dll is missing
...tion (keeps down the size of the executable).
Updated:
Based on feedback from Greg Treleaven (see comments below), I'm adding links to:
[Screenshot of Code::Blocks "Project build options"]
[GNU gcc link options]
The latter discussion includes -static-libgcc and -static-libstdc++ linker option...
google oauth2 redirect_uri with several parameters
... @spender: so you imply that two requests almost in sequence from the same client might be handled by different servers in the webfarm. If that's the case, this is not the only thing affected, basically Session variable couldn't be used in that scenario for anything. BTW: I am not argu...
PHP - concatenate or directly insert variables in string
...tring, and I am very thankful for now knowing how to separate the variable from the rest of the sting if need be using the {}.
– Web_Designer
Apr 9 '11 at 15:51
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Performance of FOR vs FOREACH in PHP
...luate at parse time whether anything modifies the array. This prevents it from evaluating the count once.
But even once you fix it with "$c=count($x); for ($i=0; $i<$c; $i++) the $i<$c is a bunch of Zend opcodes at best, as is the $i++. In the course of 100000 iterations, this can matter. F...
Calculating moving average
... of non-NA values. Here's one way of doing that, incorporating the comment from @Ricardo Cruz:
cx <- c(0, cumsum(ifelse(is.na(x), 0, x)))
cn <- c(0, cumsum(ifelse(is.na(x), 0, 1)))
rx <- cx[(n+1):length(cx)] - cx[1:(length(cx) - n)]
rn <- cn[(n+1):length(cx)] - cn[1:(length(cx) - n)]
rs...